快门动画AVFoundation iphone

Question

我正在尝试复制iPhone Camera app默认快门动画。

也许有人试过这样做并有一些提示要分享？

Answer 1

好吧，我发现了这个地方：

     CATransition *shutterAnimation = [CATransition animation];
     [shutterAnimation setDelegate:self];
     [shutterAnimation setDuration:0.6];

     shutterAnimation.timingFunction = UIViewAnimationCurveEaseInOut;
     [shutterAnimation setType:@"cameraIris"];
     [shutterAnimation setValue:@"cameraIris" forKey:@"cameraIris"];
     CALayer *cameraShutter = [[CALayer alloc]init];
     [cameraShutter setBounds:CGRectMake(0.0, 0.0, 320.0, 425.0)];
     [self.layer addSublayer:cameraShutter];
     [self.layer addAnimation:shutterAnimation forKey:@"cameraIris"];

这是默认的iPhone相机快门动画。

Answer 2

在Swift 3.0中......

let shutterAnimation = CATransition.init()
shutterAnimation.duration = 0.6
shutterAnimation.timingFunction = CAMediaTimingFunction.init(name: 
kCAMediaTimingFunctionEaseInEaseOut)
shutterAnimation.type = "cameraIris"
shutterAnimation.setValue("cameraIris", forKey: "cameraIris")

let shutterLayer = CALayer.init()
shutterLayer.bounds = self.view.bounds
self.view.layer.addSublayer(shutterLayer)
self.view.layer.add(shutterAnimation, forKey: "cameraIris")